More often than not the weather in Reykjavik all through August is 9, with highs being around 13 degrees with a low of 8 celsius. We have put some more information here:
| Month | Degrees Celsius |
|---|---|
| Temperature | 9 |
| High Temperature | 13 |
| Low Temperature | 8 |
| Sunshine Per Day | 6 |
Useful Links: Reykjavik Weather: Average Weather & Yearly Climate